Sash-fastener



I a screw 4 is fitted to slide.

UNITED STATES PATE T OFFICE.

GEORGE- F. STANSBURY, OF WEEDSPORT, AND EZRA IV. SMITH, OF ALBANY,

' NENV YORK.

SASH-FAISTENER.

SPECIFICATION forming part of Letters Patent No. 587,878, dated. August10, 1897.

Application filed December 4, 1896. Serial No. 614,438. (No model.)

To all whom it may concern:

Be it known that we, GEORGE F. STANSBURY, of Veedsport, in the county ofCayuga, and EZRA XV. SMITH, of Albany, in the county of Albany, State ofNew York, have invented new and useful Improvements in Sash-Fasteners,of which the following is a specification.

Our invention relates to a sash-fastener which may be used, according tothe manner in which it is attached to a sash, either to lock the sash ina raised position or when the sash is at the lowest point of itsmovement lock it in a closed position; 'and it consists of the fasteningdevice described herein and pointed out in the claim, which forms a partof this specification.

In the accompanying drawings, which are herein referred to and form partof this specification, Figure 1 is a front elevation of a sash providedwith our fasteners, one of which is arranged to prevent the sash frombeing raised and the other to hold the sash in a raised position Fig. 2,an enlarged and detached portion of a sash provided with one of ourfasteners arranged to prevent the raising of the sash; Fig. 3, ahorizontal section of Fig. 2 at the line X X; and Fig. 4, an elevationof the same, showing the outer face of the bearing-plate of ourfastener.

As represented in the accompanying drawings, A designates a sash ofordinary construction. Said sash may be of any required form and size,and it should have in one or both of its vertical edges a recess B forreceiving one of our fasteners, and the inner face of said recess shouldhave a slight inclination in respect to the vertical edge of the sash.

O is a plate which carries the parts of our fastener, and it is bentlongitudinally to conform to the face of the sash and the inner face ofthe recess B. An outer member 1 of said plate is preferably providedwith a recess 2, having in its bottom a slot 8, in which Said screw hasa head 5, which will slide in said recess and alford sufficient hold fora person to operate our fastener. The other member 6 of the plate 0 fitsover the edge of the sash A, conforming to the inner face of the recessB, and

with 2. lug 8, in which the screw 4 is fitted to engage in such mannerthat the bearing-plate will move simultaneously with a movement of thehead 5 of said screw. The outer face of the bearing-plate D may have aseries'of transverse grooves or other means for increasing thefrictional adhesion of said bearing-plate with the window-frame; butwhen our fastener is properly applied and fitted sufficient adhesion ofthe bearing-plate with the window-frame will be obtained when the faceof the bearing-plate is unprovided with a roughened surface.

By forming a recess 2 in the plate 0 provision is made for allowing twosashes to move when arranged closely together in the same window-framewithout interference of our fasteners, but when the lower sash alone ismovable thescrew 4 may have a protruding head.

lVhen our fastener is used for holding a sash in a raised position, itmust be arranged, as shown at the right-hand side of Fig. 1, so that adescending movement of the sash, while the binding-plate D is held incontact with the window-frame, will force said plate into a frictionalcontact that will prevent the sash from moving downward. To release thesash from its fixed position, the sash should be slightly raised torelieve the bearing-plate from its frictional contact with thewindowframe. Then by moving the screw 4 toward thebottom of the slot 3the sash will be free to be moved in an upward direction.

When our fastener is used for locking the sash from being raised, it isarranged, as 5 shown on the left'hand side of Fig. 1, so that thebearing-plate D will be carried'by its own gravity to the narrowest partof the space between the window-frame and the plate 0. Then an attemptto raise the sash will effect a greater degree of frictional contactbetween the bearing-plate D and the The outer face of said bearing. 55

window-fraine, and this contact can only be broken by first raising thebearing-plate D by means of the head 5, when the sash A will be free tobe raised.

What we claim as our invention, and are desirous of securing by LettersPatent, is-

A sash-fastenenconsisting of a plate, 0, bent longitudinally to formmembers, 1 and 6 5 each of said members having a slotted opening formedin it, a bearing-plate, D, of a Wedge-like form and having a lug, 8,formed to project from its inner face and fitted to move in a slottedopening, 7, in the member 6, and a screw, 4, which engages in said lugand is fitted to move in a slot, 3, formed in Is

